6.6a - ibbriner

6.6a - Human reproduction

DCS Topic Code	Statement	Guidance
6.6.U5	A gene on the Y chromosome causes embryonic gonads to develop as testes and secrete testosterone.
6.6.U6	Testosterone causes pre-natal development of male genitalia and both sperm production and development of male secondary sexual characteristics during puberty.
6.6.U7	Estrogen and progesterone cause pre-natal development of female reproductive organs and female secondary sexual characteristics during puberty.
6.6.U8	The menstrual cycle is controlled by negative and positive feedback mechanisms involving ovarian and pituitary hormones.	The roles of FSH, LH, estrogen and progesterone in the menstrual cycle are expected.
6.6.A4	The use in IVF of drugs to suspend the normal secretion of hormones, followed by the use of artificial doses of hormones to induce superovulation and establish a pregnancy.
6.6.A5	William Harvey’s investigation of sexual reproduction in deer.	William Harvey failed to solve the mystery of sexual reproduction because effective microscopes were not available when he was working, so fusion of gametes and subsequent embryo development remained undiscovered.
6.6.S1	Annotate diagrams of the male and female reproductive system to show names of structures and their functions.